As for the endoscope, inside the Drive signal relay substrate is stored through the fixed screw the case itself and to the case itself which possess the space, installation and removal you install possibly and as one unit you store the Drive signal relay substrate inside the shielded case which with the lid which is locked is formed, through the installation screw of two types to the function part skeletal part which can provide the shielded case where the Drive signal relay substrate is stored in the endoscope function part installation and removal possibly installing, being the endoscope which provides the Drive signal relay substrate on endoscope manipulation circles, as for the function part skeletal part, in the position where it decides beforehand, the installation screw the spiral shellfish the female screw section for case itself installation which is adjusted and,Opposing to the 1st perforation hole which the female screw section for shielded case installation and, it has, as for the case itself, the fixed screw the spiral shellfish opposing to the spiral shellfish conjunction section which is adjusted and the female screw section for shielded case installation one side of the installation screw is passed, is laid out and the female screw section for case itself installation another side of the installation screw passes, the 2nd perforation hole which is laid out and, having, The lid has opposing to the spiral shellfish conjunction section which the fixed screw passes, with the perforation hole for the fixed screw which is laid out and opposing to the 1st perforation hole of the case itself which one side of the installation screw it passes, the perforation hole for the installation screw which is laid out.内視鏡は、駆動信号中継基板を収容する内部空間を有するケース本体とケース本体に固定ネジを介して着脱可能に一体に取り付け固定される蓋体とで構成されるシールドケース内に駆動信号中継基板を収容し、駆動信号中継基板が収容されたシールドケースを内視鏡操作部に設けられた操作部骨格部品に二種類の取付ネジを介して着脱可能に取り付けて、駆動信号中継基板を内視鏡操作部内に設けた内視鏡であって、操作部骨格部品は、予め定めた位置に、取付ネジが螺合するケース本体取付用雌ネジ部と、シールドケース取付用雌ネジ部と、を備え、ケース本体は、
